Our Valued Sponsor
OpinionsConsumer ReviewsGuides and How TosCoffeeGeek ReviewsResourcesForums
Espresso: Espresso Machines
Working on my machine - help needed
Support Coffee Kids
Coffee Kids is a non profit charity working with farming communities around the world. Donate today!
www.coffeekids.org
 
Not Logged in: Log In to Postlog in
New Topics updated topics   New Posts new posts   Unanswered Posts new unanswered  
Search Discussion Board search   Discussion Board FAQ faq   Signup sign up  
Discussions > Espresso > Machines > Working on my...  
view previous topic | view next topic | view all topics
Author Messages
msb
Senior Member


Joined: 28 Jul 2013
Posts: 3
Location: USA
Expertise: I live coffee

Posted Sun Jul 28, 2013, 4:51pm
Subject: Working on my machine - help needed
 

Have a manual cimbali jr, the gauge has three colors - blue up to 0.8 green up to 1.8 then red. It always runs rite below or above 0.8 and lately below 0.8  Fiddle with it for a couple hours today to try and get the gauge up. Looks pretty clean inside, Crome or stainless boiler and all looks perfect inside. Think I finally figured out what is what sorta. Found some sort of adjustable (external spring loaded) pressure valve inside a shrouded box next to a electric points terminal, turned that in and out so much w/no change on gauge, have no idea where it's was so I put it in the middle somewhere. Found another adjustable thing in the lower front it has a lg flat head end on it, seems to be for adjusting but only moved it a tad

The funny thing is while I was working on it the gauge was at the bottom and didn't move up at all, the machine seem to function proper and put out 185 deg water but zero on the gauge. Put it back together and in kitchen and now the gauge is going up, still below 0.8 though. The only thing I can see is while I was working on it I had the res tank out and there is some sort of 3-wire module or valve with a nut and a stud through it, maybe the tank sets on that stud for it to function, kinda bizarr and besides the point.

I just want to get her dialed in
I roast my own also / kinda into it
Thanks. Mike

msb: image.jpg
(Click for larger image)
back to top
 View Profile Link to this post
calblacksmith
Moderator
calblacksmith
Joined: 25 Nov 2007
Posts: 7,672
Location: Riverside, Ca, U.S.A.
Expertise: I live coffee

Espresso: ECM Vene. A1, La Cimbali M32
Grinder: Azkoyen Capriccio, Major
Vac Pot: 40s era Silex
Drip: Msl. Com. brewers
Roaster: gave it a try, decided no
Posted Sun Jul 28, 2013, 5:36pm
Subject: Re: Working on my machine - help needed
 

Hi
You really need to use an external thermometer to see what is really going on. The gauges in espresso machines are not  known for being rock solid and long lived.

A fast acting digital thermometer and a Styrofoam cup will get you close. Please search for Styrofoam cup method for a LOT of reading :-)

 
In real life, my name is
Wayne P.
Anything I post is personal opinion and is only worth as much as anyone else's personal opinion. YMMV!

Feed the newbs, starve the trolls and above all enjoy what you drink!
back to top
 View Profile Visit website Link to this post
msb
Senior Member


Joined: 28 Jul 2013
Posts: 3
Location: USA
Expertise: I live coffee

Posted Sun Jul 28, 2013, 6:18pm
Subject: Re: Working on my machine - help needed
 

Thanks i will try it. Machine seems to be working fine, still below 0.8 though. I don't really have any thing to physically reference too, just been using my machine for years and that's all I know. I guess the only thing I can really check is the temp? And set up grind to pull shots how I like them?  (Usually 18 to 20 seconds for 2oz)
back to top
 View Profile Link to this post
frcn
Senior Member
frcn
Joined: 23 Dec 2001
Posts: 3,351
Location: Northern California
Expertise: Professional

Espresso: Vibiemme Domobar Double
Grinder: Mazzer Kony, Baratza...
Vac Pot: Hario, 2 Cory pots, 1 Cory...
Drip: Behmor Brazen, Bunn A10 mod...
Roaster: computer controlled Hottop,...
Posted Sun Jul 28, 2013, 7:14pm
Subject: Re: Working on my machine - help needed
 

From your description, teh box was the pressurestat- that is a thermostat that controls temperature by responding to the pressure in the boiler. That is what adjusts the pressure, and indirectly, the temperature in the boiler. As callblacksnmith stated, use a thermometer to see if the temperature is close when the water comes out of the boiler. It is not a very accurate method, but it will help tell whether the pressurestat is working fairly well. Next step would be to reference the make and model of the pressurestat. The adjustment method varies, and some can be damaged by turning the screw too far. take care when adjusting it as the contacts carry the full current to the heating element. With the machine unplugged, examine the contacts and see what they look like.

Now.. if all this is reading like a foreign language, it is time to enlist the assistance of someone who knows what to do, or send it in for service.

 
Visit My Website
www.EspressoMyEspresso.com
back to top
 View Profile Visit website Link to this post
msb
Senior Member


Joined: 28 Jul 2013
Posts: 3
Location: USA
Expertise: I live coffee

Posted Mon Jul 29, 2013, 5:33am
Subject: Re: Working on my machine - help needed
 

Whenever it comes to the inside of the machine it sound more like coffee Greek. Calling it a t-stat makes way more sense now. There are four points next to the stat, it looks like only one is being used and its a bit black, while i was in there i was thinking of moving the used one over to a new unused one? the points seem to function all at the same time. Also Found a YouTube that looked intriguing -they had a gauge attached to the potrtafilter that measured the bar pressure / volume coming out, don't have one of those so eventually I'll probably need to bring it to a shop to have it serviced. I live in portland Or, so there are a few service places here. What would I ask them to do to my machine "tune it up" ?
back to top
 View Profile Link to this post
calblacksmith
Moderator
calblacksmith
Joined: 25 Nov 2007
Posts: 7,672
Location: Riverside, Ca, U.S.A.
Expertise: I live coffee

Espresso: ECM Vene. A1, La Cimbali M32
Grinder: Azkoyen Capriccio, Major
Vac Pot: 40s era Silex
Drip: Msl. Com. brewers
Roaster: gave it a try, decided no
Posted Mon Jul 29, 2013, 5:57am
Subject: Re: Working on my machine - help needed
 

The Portafilter device is called a SCACE device.

It tells you just what is going on with your machine but you can start simple, like FRCN saic, it is not super accurate but the digital thermometer in a shortened foam cup, will get you close enough to start to converse with what is going on inside your machine.

The gauges on espresso machines very often fail, it sounds like yours may not have been reading properly for a long time. Normal static pressure in the boiler when heated is in the ball park of 1.1bar. This is really the temp inside the boiler as expressed in bar of pressure (like a pressure cooker, the temp is relational to the pressure in a sealed vessel)

Also, like he said, it sounds like the P-stat (not T stat, the P is for PRESSURE) is what you were adjusting and it would help to know which one you have, there are a few different makers of them and they each have their own "differences".

Sorry for the less than full first post by me. I was on a tablet and those touch key pads are not like using a keyboard, that I am on now.

 
In real life, my name is
Wayne P.
Anything I post is personal opinion and is only worth as much as anyone else's personal opinion. YMMV!

Feed the newbs, starve the trolls and above all enjoy what you drink!
back to top
 View Profile Visit website Link to this post
baluka253
Senior Member


Joined: 12 Jan 2012
Posts: 4
Location: Berlin
Expertise: I love coffee

Posted Mon Jul 29, 2013, 7:57am
Subject: Re: Working on my machine - help needed
 

Great Job calblacksmith
back to top
 View Profile Visit website Link to this post
view previous topic | view next topic | view all topics
Discussions > Espresso > Machines > Working on my...  
New Topics updated topics   New Posts new posts   Unanswered Posts new unanswered     Search Discussion Board search   Discussion Board FAQ faq   Signup sign up  
Not Logged in: Log In to Postlog in
Discussions Quick Jump:
Symbols: New Posts= New Posts since your last visit      No New Posts= No New Posts since last visit     Go to most recent post= Newest post
Forum Rules:
No profanity, illegal acts or personal attacks will be tolerated in these discussion boards.
No commercial posting of any nature will be tolerated; only private sales by private individuals, in the "Buy and Sell" forum.
No SEO style postings will be tolerated. SEO related posts will result in immediate ban from CoffeeGeek.
No cross posting allowed - do not post your topic to more than one forum, nor repost a topic to the same forum.
Who Can Read The Forum? Anyone can read posts in these discussion boards.
Who Can Post New Topics? Any registered CoffeeGeek member can post new topics.
Who Can Post Replies? Any registered CoffeeGeek member can post replies.
Can Photos be posted? Anyone can post photos in their new topics or replies.
Who can change or delete posts? Any CoffeeGeek member can edit their own posts. Only moderators can delete posts.
Probationary Period: If you are a new signup for CoffeeGeek, you cannot promote, endorse, criticise or otherwise post an unsolicited endorsement for any company, product or service in your first five postings.
Stefano's Espresso Care
Repair - Parts - Sales
Factory Authorized &
Trained Technician
www.espressocare.com
Home | Opinions | Consumer Reviews | Guides & How Tos | CoffeeGeek Reviews | Resources | Forums | Contact Us
CoffeeGeek.com, CoffeeGeek, and Coffee Geek, along with all associated content & images are copyright ©2000-2014 by Mark Prince, all rights reserved, unless otherwise indicated. Content, code, and images may not be reused without permission. Usage of this website signifies agreement with our Terms and Conditions. (0.381016969681)
Privacy Policy | Copyright Info | Terms and Conditions | CoffeeGeek Advertisers | RSS | Find us on Google+